Paint fbeheating and sfrayii



Nov. 21, 1950 A. A. ARVlNTZ ETAL 2,530,799

PAINT PREHEATING AND SPRAYING APPARA'] us Filed Nov. 16, I948 INVENTORSHBRHHQM FLQRVINTZ NHTHFIN H. HRVINS BY ROBERT FLnRvmTz ATTORN Y PatentedNov. 21, 1950 2,530,799

UNITED STATES PATENT OFFICE,

PAINT PREHEATING AND SPRAYI] ['G APPARATUS Abraham A. Arvintz and Nathan1, Arvins, Brooklyn, and Robert A. Arvintz New York, N. Y., assignors toSanicom Gompanw, Ina, Brooklyn, N. Y., a corporation of New Y1 rkApplication November 16, 1948, Serial No. 50,364

14 Claims. (Cl, 21.933)

1 2 This invention relates to apparatus for use in The shell 25 opensinto the chamber l6 near preheating a fluid or heavy fluid such forexample the upper end thereof and the lower end of the as paints,lacquers, enamels or the like or chernshell apertures 2'! which providea circulalcal or other compositions or any type or kind tion t the fluidin the chamber I6 upwardly in the spray or other discharge thereof and,parthrough the ch ,mber 28 and downwardly through ticularly, wherein itis desirable to preheat the thechamber ll as will be apparent. fluidprior to, and in the act of, dischargzng the Extending 1r u the unit 23is a tube 28 for disame from the apparatus, Still more particurentingelectric wires to thermo-switches 29 and larly, the invention deals withapparatus or the 3}} and t9 a pill t light 3|, the switches 29 and 30character described, wherein. single preheating having element s 3.51and .30 exposed to the chain? unit. s m l d t t flui to be her it a 1 3different levels in rd r to charged, as well as to preheat air utilizedin the provide centre is for temperature or the disdischarge(qr-spraying of the fluid from a gun, so charged paint 1! ot er fluidbeing directed to a as oma n in e u t a ar st a the 9 ke. asdiagrammatically e P n of h ge fro th su at am the d w s a The novelfeatures of r the invention will be Diagrammatl illustrated on the isbest understood iron; the following description, a paint or fluid tankgar-container 33 through the when taken together with the accompanvingdischarge pipe 3 4 of, which paint is adapted to ra s h ch c rt .emb dem as -t9 n men a. pump than through invention are disclosed and inwhich the drawing e pipe 3;: into the coil 19 through a connecting is asectional view througha preheater and diapipe 31; Ijhe ripe}? has acontrol valve 38. grammatically illustrating the associated parts ThecqilfllS. is in close proximity to the or the apparatus to demonstrateuse of the pre-- wall of the she ll It and has, at ltsfupper end, aheater. discharge-pipe 39 in which is a thermomet r .60. Inthe drawing,we have shown a sectional view Coupled with t1 {c pipe39 is a flesibletubeor hose through P heat d RWIQE mMPWQQMP S BE a 4- h ch l ad o e nsyl s A suitable main casing II in thei'onn of. a cylinder or tank valve424s em played: togcojnt'rol discharge. havin an ou jacket U1. hi whichs Ez sndine thsnrev l re n fle rangcd-insulating material I3, Within theasing ibletube or ho: e 3 which; couples with a bi-pass or cy d IIisposed supplemental cyl- 3. ra n ti s mp 1' u it nk 01 co inder orshell [4 which divides the casing into tamer 3; fot'c'sxess or fluidand-also an outer chamber l5 and anflinner chamber l5, tor the returniuid-Iromthe pipe 43, The chamber l5 forms what: may be termed. a Thetank or container has a suitable-vent heat transfer chamber and maycontain a heat 55 with. event check 16. thereimg transfer medium of anytype or. hind preferably 3a I he. nin U..- which 1 he P p w th in liquidform, the liquid-being introduced into the pipe ,is: reliei valve torelieve excessive the chamber through the filling cap H. The pressureswhich may prevail at anytime ii -this chamber.l6,ln like manner, may befilled through circiflatory sy: tern, These pressures may, be thecapIt}. It will be understood that-the shell noted by, 1 .8 auge 49 on thetank; 33. )nthe' I 4 prevents the fluidvof the chamber .l 5 from con-t40 other hand. th valve 48 m be set '31 au mst tarninating the mild inthe chamber 16 in the relieve the excess pressure. event'that atleakageoccurs in the paint or' chem- Also .arranggd in the chamber 15 isanother ical heatilm' coil f9, which is disposed in the coil 50 with gnintake pipe 5| leading tothe botchamber L5. The casing, including itsJacket, is tom 9; the coil through the-closureplate 2| and closed at oneend, as seen at 20, whereas the other -1 up exhaust 52 t lrough the top20 of the preheate nd is closed by wayoi a closure plate ll and the thelatter havi mg a discharge through a flexible un is p ier b y upportedover a su a .by a ub 9 21 to 8 This dismal is bas or suppo n frame 22 orany b e, and con r lled W preferably openworig, construction.(ggupledwith the discharge pipe 39 inwardly A suitable electric heatingunit is diagram'.-, 5o 91' thevalve 42 is a pipe having a control valvematlcally illustrated at 23 as supported in the 56 therei n and a fillercap 51 at its end, so that a plate 2|, the unit having a heating element24 ex' soivent or suit: tble cleaner can be placed in the i-out the 0011from time to time I the fluids, that is to say, d the like shouldtending. upwardly in the shell I4 and disposed coil- 89 to clea' withina Supplemental inner shell 25 which forms in the event th gt any 0 a moe or less instantaneous fluid heating champaints, enamel s, lacquers anber 26 within the chamber I8. solidify or cake therein.

It will also be noted that a thermometer 5B is employed in the pipe 52.Extending into the chamber l5 at the upper end thereof is anotherthermometer 59, so that, at all times, a reading can be taken of thetemperature of the heat transmitting medium in the upper portion of saidchamber.

Suitable valve controlled drains are provided for the chambers l5 andIS. The drain for the chamber I5 is shown at 60 and for the chamber l6at 6|.

In the drawing, we have shown in the pipe line 5| suitable means, as at62 for supplyof air to said pipe from a suitable source of pressure airsupply, the inlet pipe being shown'at G3 and, at 64, is shown a controlvalve to control supply of air to the coil 50., At 31' is shown a valvecontrolled-paint drain for the pipes 3H1.

The present invention does not deal' spe-' ciflcally with the structureof the spray gun 32. However, suitable means, as for example, a trig ger65 is provided on the gun for controlling spray discharge of paint orother fluid from the nozzle end 58 of the gun. In the use of them;-

for circulating the heat transfer medium therethrough and for quickheating of said medium, and an air coil in said chamber and heated bythe same heating medium employed for heating the fluid coil.

.2. A fluid preheater comprising a main msulated casing, a cylinderwithin said casing and spaced from the inner walls thereof to form aheat transfer chamber around said cylinder, a fluid circulating coil insaid chamber, means comprising a heating element arranged in saidcylinder for heating a transfer medium in the cylinder for, inturn,'heating said chamber and the .fluid insaid coil, means within saidcylinder for circulating f the heat transfer medium therethrough and forquick heating of said medium,

on air coil insaid chamber and heated by the same heating'mediumemployed for heating the "fluid 'coil,"'and means for directing heatedfluid station in spaced relation to paratus, the heat transferringmedium p ed heat "cylind'en a in thechamber I6 is brought to the propertemperature by the heating element 2! and trans? mitted to the heattransfer "medium or fluid in the chamber l5 to heat both the fluid inthe coil 26 and the air in the coil 50.

In the use of the apparatus, the paint is discharged in conjunctionwiththe hot'airfrom the'spray gun by operation thereof, the circuitoperating; continuouslyand; if excess pressure- By mounting the unit 23in 'themanner describ'ed, the samef'can be removed whenever desired forcleaning, repairer-replacement; 1

Itwill' be apparent that the'illustrations' in the raccompanyingdrawings arediatic forithe purpose. of simplifying the illustration. Thearticularit r e f fittings couplings will be employed as desired andthisis also true of the various controls and fore:-

which are. employed. Allof theseflevices or mechanisms are well-known inthe and, for this reason, need-no detail showing.

The present I QYentiOnJdeaIs primarily with the heater unit and it willbe understood that such devices or apparatus as the theme-switches pilotlight and the like are'suitably' hooked-up with the heating-meanstoprovide any desired or predetermined temperature in the fluid which iscirculatedto the point of discharge."

Having fully described our invention, 'what we claim as new and desireto secure by letters Patentis:

l. A fluid preheater comprising a ain insulated casing. a cylinderwithin said.- casing and spaced from the inner walls-thereof to formheat transfer chamber around saidvylinde'r, a fluid circulating coil insaid chamber, means comprising a heating element arranged in saidcylinder for heating a transfer medium in-the cylinder'for, in turn,heating said chamber and of -'nuid'-throu huid circulag ting ooii'-insaid comprising a heating arranged int said fluid circulating coil-'in said comaheatingelementarran'ged in said cylinde -1 r heatinga mdium in'the cylinder forg'in-tmfn, and the fluid in said' coil;{cylinder for circulating 1 the heat?- medium; therethroughandforquiclijheating or'sam medium, an aircoil -in -said chambenand heated bythe sameheating-infirm@mployeddofiheating'the fluidcoil, means fforfdlrectingf j -=heated'- -nmcr-fand air to' 'a comm' on station ea'renudh to ammo-1W e ten-comprisin j speced'hfbin the" 1 heat-'transf' fer cha'n'iber chamber, means medi anti cl ics-heating? r.. edhmi inp h ldei rim mm the uidi'nsaid'colhnieafiswlthinsaidcylinder se mstress m d wr i Tush-feud. for acial: eating. of .saidgm edium, an'air' coilinaiochamberffhnui eatee brjthe same heating 'mdiunf eniplojedrfor heatihgthe oiildi'cou, ahdiindependent mean for said chamber in the, macewithinisaid cylinder.

spaced'from the innerf'walls thereof to form a the fluid in said coil,meanswithin said cylinder "heat transfer chamher j'arounq fcyl inder, a

fluid circulatirigkcoil .in .said chamber, means comprising a heatingelement arranged in said cylinder for heating a transfer medium in thecylinder for, in turn, heating said chamber and the fluid 'in'said'0011, means within said cylinder foncirculating the heat transfer medium.theiethrough and for quick heating of said medium, aXL'E-iI coil .invsaidchamber and heated by the same heating .medium :employed forheating'the .fluid .coil,.independent means for. .dra'iningisaid chamber.in the .spacezwithin said cylinder, and means for introducing a solventin the fluid coil and means for draining said fluid coil.

7. Inapparatus for preheating fluids and for directing heated air to a.fluid at a point or discharge, said apparatus comprising an insulatedcasing, in which a fluid coil and an air coil are arranged, a cylinderin" the casing inwardly of said coils forming a heater unit, anelongated small diameter tube within said cylinder and short of one endthereof, said tube being ported at the other end to provide circulationof a fluid heating medium within said cylinder, an elongated electricheating element in said tube providing quick heating 01' i the fluidmedium in said cylinder, and means providing forced circulation of fluidthrough said fluid coil.

8. In apparatus for preheating fluids and for directing heated air to afluid at a point of discharge, said apparatus comprising an insulatedcasing, in which afluid coil and an air coil are arranged, a cylinder inthe casing inwardly of said coils forming a heater unit, an elongatedsmalldiameter tube within; said cylinder and short of oneend thereof,said tube being ported at the other endto provide circulation of a fluidheating medium within said cylinder, an elongated electric heatingelement in; said tube providing' quick heatingot. the fluid" medium insaid cylinder, means providingforced'circulation of fluid through saidfluid coil, and means draining said casing and saidcylinder.

,9. In apparatus for preheating fluids and for directing heated'air to,a fluid'at a point of discharge, said apparatus comprising an insulated11. A rreheater apparatus of the character described comprising a-casinghavinginsulated top and'si ie' walls, the bottom of the=casing beingopened, an insulated closure -Ior the '-bottom' oi the casinl a'cylinderwithin the casing-between the top w ll thereof and said bottom closure'dividing th: casing into an -outer heat transfer chamber and an innerheater chamben'means mounted within-said bottom closureand-extendinginto ihe inner chamber for beatings -'fluid therein, z coilin the heat transfer chamber, meansexi ending throushthe bottom closurefor supplying a fluid tofsaid coil, means extending through i be top of{*the casing for discharging fluid from said coil to a predeterminedstation, and mears providing pressure circulation or a fluid thro' lghsaid coil.

12. A preheaterapparatus of the character described comprising a casinghaving insulated top and si le walls, the bottom of the casing beingopened, an insulated closure for the bottom or the casing, a cylinderwithin the casing between the top w: ill thereof and said bottom closuredividing the casing into an outer-heat transfer chamber and an'innerheater chamber, means mounted l rithin said bottom closure and extendinginto tie inner'ohamber for heating a fluid therein, a coil infthe heattransfer chamber, means ext ending through the bottom closure forsupplying a fluid to said 0011, means extending throu'gh't 1e topof-thecasing for discharging fluid from said coil to a predeterminedstation,

means prc riding-pressure circulation of a'fluid through' si idcoiLaJsecondary coil in said transfer'chamt outwardly. otfth'e firstnamed coil,

and mean sjiorjcirculating air under pressure casing, in which a fluidcoil andan aircoil are arranged, a cylinder-in the casing inwardly of asaid coils forming a, heater an; elongated small diameter tubewithin{said cylinder and '--short or oneena thereoLsaid'tuhe being ported atthe other'endto provide circulation or a fluid -heating, medium withinsaid'cylindenan clongated electric heating element inisaidi tube,providing quick heating or, the, fluid mediumin said a cylinder, meansproviding forced circulation of fluid through said fluidcoiLmeansdraining said casing and said cylinder, and means for drainingthe-'fluid'coil.

; 10,111 apparatus for preheating fluids and for heated air toa fluid,at apolnt of discharge, said, apparatus comprising an insulated casing,in which a fluid coil and an air coil are arranged, a'cylinder inthecasing inwardly of said 'coils'rorming a heater unit, an elongated smalldiameter tube within said cylinder and short orone end thereof, saidtube being ported at'the otherend to provide circulation or a fluidheating medium within said cylinder, an elongatedelectric heatingelement in saidtube providingquick heating of the fluid mediumof saidcylinder, means providing forced circulation of fluid through said fluidcoil, means draining said casing and said cylinder, means for drainingthe fluid coil, and means for introducing a solvent into the fluid coil.

through as id secondarycoilior discharge to said 13. A"nreheater'-"apparatus'o!, the character described iompri'singfa having insulated topandd; ie 'walls, thebottom'or the bea ing opene i',$an {or the bottom'ofthe'casing,-. a cylinder-'withinthe casing be-- tween the top wallsaid bottom closure'dividi is the into an outer heat transfer chamb irand innerheater chamber, means mounted bottom andlexk nz q h atin a".hflat chamtosaidzcoil, means uidj ir'om said apredetermined Istation,mi eans 'flproyidingfpressurevcirciflation oi a-fluidthrniuglisaidcoihasecondary in said transfers] timber or'tne flrst namedcoil, mean r ro'rj? eirculating' iair under pressure.

coil; transi. 2r and heater. chamber havingindepeudentdralns; a 4 1 14A"p1 ehea iappmas or the character described omprisingq a casing havinginsulated top and sit e walls, the bottom 01' the casing beopened, aninsulated closure-tor the bottom 01 the casing, a cylinder within thecasing between the iop wall thereof and said bottom closure dividir gthe easing into an outer heat trans fer chambe and an inner heaterchamber, means mounted w. thin said bottom closure andextending intotheinner chamber for heating a fluid therein, a coil in the heat transferchamber, means exte ading throughthe bottom closure for supplying afluid to said coil, means extending through the top of the casing fordischarging fluid from said coil to a predetermined station, meansproviding pressure circulation of a fluid through said coil, a secondarycoil in said transfer chamber outwardly of the first named coil, meansfor circulating air under pressure through said secondary coil fordischarge to said point of discharge of said fluid, said fluid coil,transfer chamber and heater chamber having independent drains, and meansproviding return of fluid from said point of discharge to the source of10 2,036,815

supply of fluid.

ABRAHAM A. ARVINTZ. NATHAN A. ARVINS. ROBERT A. ARVINTZ.

REFERENCES CITED The following references are of record in the flle ofthis patent:

UNITED STATES PATENTS Number Name Date 884,540 Thomson Apr. 14, 19081,277,621 Macklind Sept. 3, 1918 1,733,806 Bowen et a1. Aug. 26, 1930Leader Apr. 7, 1936 2,384,704 Standing Sept. 11, 1945

